So Apple engineered a system that can't be repaired without introducing a (mostly irrelevant) vulnerability. This is Apple's fault, they can do better. Here's

So Apple engineered a system that can't be repaired without introducing a (mostly irrelevant) vulnerability. This is Apple's fault, they can do better. Here's an alternate universe: You replace your home button, and now you need to use your PIN to unlock the device and Touch ID is reinitialised. And in any case, I don't know why we're playing into Apple's security theatre, if there are technically sophisticated adversaries who can invade your personal security trying to hack you, it's game over for you. Nothing Apple does with Touch ID will be relevant.